How to fix CVE-2025-51487?

During next maintenance window: Identify affected systems running MoonShine and apply vendor patches when convenient. Verify Content-Security-Policy and output encoding.

Is Moonshine affected by CVE-2025-51487?

Organizations using MoonShine should be aware of moderate risk from CVE-2025-51487, a cross-site scripting vulnerability rated CVSS 4.5. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Proof-of-concept code is publicly available.

CVE-2025-51487

MEDIUM

2025-08-19 [email protected]

XSS Moonshine

4.5

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Patch Released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 19:07 vuln.today

PoC Detected

Aug 21, 2025 - 14:29 vuln.today

Public exploit code

CVE Published

Aug 19, 2025 - 15:15 nvd

MEDIUM 4.5

DescriptionNVD

A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when creating/updating a new Article.

AnalysisAI

A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS. Rated medium severity (CVSS 4.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when creating/updating a new Article. Affected products include: Moonshine.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-51487 vulnerability details – vuln.today

Back